XML 153 R126.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Share Capital - Summary of Dividends Declared and Recorded in the Consolidated Financial Statements (Detail) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 CAD ($) $ / shares
Dividends per share one [member] |
Disclosure of Dividends [line items] |
Dividend per Share | $ 0.1375
Paid | $ | $ 15.7
Date Declared | Feb. 21, 2018
Record Date | Mar. 29, 2018
Payment Date | Apr. 12, 2018
Dividends per share two [member] |
Disclosure of Dividends [line items] |
Dividend per Share | $ 0.1375
Paid | $ | $ 15.6
Date Declared | May 09, 2018
Record Date | Jun. 29, 2018
Payment Date | Jul. 12, 2018
Dividends per share three [member] |
Disclosure of Dividends [line items] |
Dividend per Share | $ 0.1375
Paid | $ | $ 15.7
Date Declared | Aug. 07, 2018
Record Date | Sep. 28, 2018
Payment Date | Oct. 11, 2018
Dividends per share four [member] |
Disclosure of Dividends [line items] |
Dividend per Share | $ 0.1375
Date Declared | Nov. 07, 2018
Record Date | Dec. 28, 2018
Payment Date | Jan. 10, 2019

X
- Definition The amount of dividends paid by the entity on ordinary shares. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2018-01-01 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2018-03-01&anchor=para_16A_f&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DividendsPaidOrdinaryShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of dividends paid per ordinary share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2018-01-01 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2018-03-01&anchor=para_16A_f&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DividendsPaidOrdinarySharesPerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of Dividends [line items] + References No definition available. + Details
Name: | stn_DisclosureOfDividendsLineItems
Namespace Prefix: | stn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividends declared date. + References No definition available. + Details
Name: | stn_DividendsDeclaredDate
Namespace Prefix: | stn_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividends payable date. + References No definition available. + Details
Name: | stn_DividendsPayableDate
Namespace Prefix: | stn_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividends record date. + References No definition available. + Details
Name: | stn_DividendsRecordDate
Namespace Prefix: | stn_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfOrdinarySharesAxis=stn_DividendsPerShareOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfOrdinarySharesAxis=stn_DividendsPerShareTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfOrdinarySharesAxis=stn_DividendsPerShareThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfOrdinarySharesAxis=stn_DividendsPerShareFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |